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Right-hand spiral law?
Determine the direction of electromotive force generated in the conductor when the conductor cuts the magnetic induction wire. The content of the right hand rule is: extend the right hand so that the thumb is perpendicular to the other four fingers and is in a plane with the palm. Put the right hand into the magnetic field so that the magnetic induction wire is vertically penetrated into the palm. The thumb is pointed to the direction of the conductor motion, and the other four fingers are pointed to the direction of the electromotive force. The direction of the electromotive force is the same as the direction of the induced current.
The direction of EMF determined by right - hand rule is in accordance with the law of energy conversion and conservation.
Precautions for applying right hand rule
1. When applying the right-hand rule, note that the object is a straight conductor, and that the velocity v and the magnetic field B are perpendicular to the conductor, and that v and B are also perpendicular.
2. The right hand rule can not be used to determine the direction of induced electromotive force.
Lenz's law
A law that determines the direction of induced electromotive force (induced current).
The general expression of the law is that the direction of the induced current (induced electromotive force) in a closed circuit always makes the magnetic field generated by it block the change of the magnetic flux causing the induced current (induced electromotive force). When the magnetic flux passing through the circuit increases, the magnetic field of the induced current is opposite to the direction of the original magnetic field; when the magnetic flux passing through the circuit decreases, the magnetic field of the induced current is the same as the direction of the original magnetic field. When the magnet and the coil generate the induced current due to relative motion, The direction of the induced current determined by Lenz's law always acts as a hindrance to the relative motion. We can express Lenz's law that the effect of the induced current always resists the cause of the induced current. This expression is more convenient for some problems. Lenz's law accords with the law of energy conversion and conservation.
The Difference and Connection between Lenz's Law and Right-hand Rule
Lenz's law is a general law for determining the direction of induced electromotive force (induced current). The object of Lenz's law is the closed loop, which is applicable to all electromagnetic induction phenomena. The object of right-hand rule is a straight conductor, which is only applicable to the case of the conductor cutting the magnetic induction line. The right-hand rule can be regarded as a special case of Lenz's law.
The algorithm of vector collinear
I'm doing it.
On the Right-hand Rule of Vector Product Right hand rule: The four fingers of the right hand, except the thumb, are combined. The thumb is perpendicular to the other four fingers. The four fingers are held from the direction of the A vector to the direction of the B vector. The direction of the thumb is the direction of the product of the A and B vectors. That is, the product of the AB vector is perpendicular to the plane defined by the A and B vectors. Note that the first point is the direction of the forward vector, in this case the four points are the direction of A first. ---------------------------------------------------------------------------------------------------------- Is the above statement reasonable? If the above is accurate, that is, the four fingers point to the direction of A first, then is not the vector product A×B and the vector product B×A just the opposite direction? Is the vector product A×B and the vector product B XA opposite?
The vector product AxB and the vector product BxA are perpendicular to the plane of the vectors A and B, respectively.
The Problem of the Right Method of Calculus Vector Product Who can help me explain the right rule of vector product? On the Right Rule of the Product of Calculus Vector Who can help me explain the right rule of vector product?
For example, a*b, four-finger roll from a to b direction, a to b, either clockwise, or reverse, thumb is the desired direction, so-called roll a to b is not you from a direction to b direction, a to b to turn your four-finger roll angle
OK?
For example, a*b, four-finger roll from a to b direction, a to b, either clockwise, or reverse, the thumb is the desired direction, so-called roll a to b is not you from a direction to b direction, a to b to turn your four-finger roll angle
OK?
How to find the product of two normal vectors? {1,1,-1} X {1,-1,0}={-1,-1,-2} Why? Calculation method What is the geometric meaning? University Analytic Geometry Content Give a formula
Is this a cross ride?
Looks like there's a right-hand theorem in analytic geometry
I don't know if you' ve studied advanced algebra.
The following is an encyclopedia:
The vector is represented by coordinates (three-dimensional vector),
If vector a=(a1, b1, c1), vector b=(a2, b2, c2),
Then vector a·vector b=a1a2+b1b2+c1c2
Vector a×vector b=|ijk||a1b1c1||a2b2c2|
This is a third-order determinant.
Its value is (b1c2-b2c1, c1a2-a1c2, a1b2-a2b1)
(I, j, k are unit vectors of three mutually perpendicular axes in space respectively)
What is the meaning of the specific set? It seems to have something to do with the normal vector. I can't remember it clearly.
Why is the direction of the higher number vector product determined by the right-hand spiral law? Why is the direction of the high number vector product determined by the right-hand spiral law?
The direction of the vector product is determined by the right - hand spiral law.
The three-dimensional coordinate system we use now is the right-hand system, which is also a convention or regulation, in the case of the right-hand system, we define the direction of the vector product by the right-hand spiral law.
If someone specifies that the three-dimensional coordinate system is left-handed, and that the direction of the vector product is determined by the left-handed spiral law, then it is the same as if the car were driven on the left.
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